Antifriction bearing



Oct. 28. 1924. 1,513,130

J. F. OCONNOR ANTIFRICTION BEARING Filed July 5. 1923 Patented Oct. 28, 1924.

UNITED STATES PATENT QFFICE,

JOHN (F. ocoNNoaoii CHICAGO, iLLiNois, AssiGNoR, HY' iviEsNE AssieNiuENrs, To W. H. MINEHINC'.. A CORPORATION OFYDELAWARE.

` Aivrirnicrioiv BEARING.

Application filed` July 5, 1923.4 Serial No; 649,422.

To all 'whom t may concern.' i f Be it known that I, JOHN F. OCoNNon, a citizen of the United States, residing at Chicago,in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Antifriction Bearings, oi' which the following is a iull,1clear,'

concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification. f

This invention relates to improvements in anti-friction bearings.

One of the objects of the invention is to provide an anti-friction bearing, especiallyr adapted for useas a side bearing on railway cars, wherein the anti-friction element proper is automatically self-centered, under the influence of gravity, after-each actuation and upon removal of the load.

More specifically, an object of the inven;

tion is to provide a side bearing of the character indicated wherein counter weights are associated with the anti-friction element proper and the retaining housing in such ka manner that the counter weights arey elevated and brought to a position of unstable equilibrium when the anti-friction element specilication, Figure 1 is a vertical sectionalk view taken through the ends of the body and truck bolsters of a railway car showing my improvements in connection therewith. `Fig-` ure 2 is a bottom plan view of the side bearing proper shown in Figure 1. Figure 3 is a vertical sectional view corresponding substantially to the section line 23m-3 ofl Figure 1. And Figure l is a side elevational view of a modied form of the invention as adapted for application to a truck bolster.-

Referring irst to the construction illustrated in Figures 1, 2 and '3, 10 denotes the upper portion of a truck bolster and 11 the lower portion of an opposed body bolster. In the form of my invention shown in Figures 1, 2 and, the side bearing is applied to the body bolster and'comprises, broadly,

a retaining housing or casting A; an anti-f.

'friction element proper B; and a pair oi counter weights G-C. y

.y The housing A, preferably in the form of a malleable iron casting, is of boXlilre form .having an upper fiat wall 12, depending side walls 13-13, and ycurved end walls 11i- 14, the housing being open at the bottom to permit thek anti-friction element ,to project therethrough. At its top, the housing A is provided with corner ylugs 15-15 by'which the saine may be riveted or otherwise rigidly secured to the body bolster. Preferably, an inserted'hardened wear plate 16 is employed, the same beingpassed through suitable openings 17-17 in the ends of the casting and held in place by the rivets 117.

The anti-friction element proper B, in the instance illustrated, is in the form oi a true cylindrical solid roller, although, as will be apparent to those `skilledin the art, this element may take other shapes without departing romthe spirit of the invention. In the case of the body bolster type of bearing, the,

anti-frictionjeleinent QB is secured to and supported from the housingA by an axially disposed pin 18 which is extended through the element and has the extreme ends of the pin working in elongated horizontal recessesy 19 provided on the inner faces ofthe side walls 13 of the housing. As will be under kstoodfromfan inspection of the drawing, the lower* edgesof said recesses support the latter is inserted, it is evident that the parts are held in assembled relation, the pin18 dropping below the openings 20.

The counter weights C, one at each recess-21l providedon the inner side of thek corresponding yadjacent side wall 155 of the housing A. Each of said recesses 21 has a lower vertically extending entrance opening end of the roller, are of like construction land 22 above Which the recess is widened horizontally in each direction :trom the center and of curved contour, as indicated at 23-23. Where the curved contour edges 23V merge With the vertical edges of the recess 21, round fulcrum points 2&24 are formed Which cro-operate with the counter Weight disks C as about to be described. y

The normal position ot the part'sis as shown in Figure 1, Where it Will be noted the counter Weight-s Care in a dependent position below their pivotal supports and Within the vertical portions 22 ot the co-operating guiderecesses. As the antifriction element B is moved toeither side of central position y--as, for instance, toward the right, as viewed in Figure l-the combined retaining and pivot pin 18 will travel in a Vhorizontal direction until'it reaches the dotted line position shown at `182. During this movement of the anti-friction element, it is obvious that the counter Weights C Willbe elevated and also rotated with respect toV their pivotal supporting pin 18 until the said counter Weight disks reach the dotted line position indicated at C in Figure 1; v During this action7 the counter vWeights will be fulcrumed aboutthe corresponding tulcrum'points 24 and7 at the extreme position ot the parts, the centers ofy the counter Weights C will lie in a vertical line VWhich is disposed between the fulcrum points 24 and the vertical center line of the bearing.V With this construction, when the load is removed from the anti-friction element, it is 'obvious that the counter Weights Will immediately tend to tall downwardly or rotate about the respective tulcrum point-s 24 and drop into the vertical portions 22 ofthe guide recesses 21, thereby pulling the antifriction element proper B VVtherewith and restoring all of the parts to central position ready for a succeeding actuation. it is obvious that the device operates in the same manner for either direction of movement.

Referring next to the construction .illustrated in Figure 1, the arrangement is sub- Astantially identical with that shown in Figure 1 except that thehousing A2 is so designed as to be attached to the truck bolster and has a loWer bearing surface 25 in the form of aninserted Wear plate therein. The anti-friction element B2 rolls upon the bottom bearing plate instead of being suspended by a pin. The anti-friction element B2 carries an axially disposed pin 118 on which are pivotally and eccentrically 4mounted corresponding counter Weight disks C2 Whichcooperate with corresponding guide recesses 121 formed in the side Walls of the housing A2. Said guide lrecesses 121 are provided f ivith tulcrum Vpoints 124 which induce Vthe same action WithV y respect to the counter Weights as described hereinbefore 1n the case ofthe bodybolster bearing. 1n both types' of theinvention7 it will be noted that the to a bolster or the like; of an anti-frictionl element proper disposed Within said housing and adapted for rolling movement in either direction from central position; a pivotal projection carried by and bodily movable with said element; aY countervveight eccen-V tr'lcally and pivotally carried by said projection; and Aopposed symmetrically arranged ledges on said housing, cooperable with saidy counteriveight, said ledges being spaced apart at the center of said housing so that said counterweight normally lies therebetween and is tiltably elevated `onto one of said ledges when the vanti-friction element is moved to either. side ot' central position.k

2. Inan anti-friction bearing, the combination With a housing adapted to be secured to a bolster'or the like; oi an anti-friction element' disposed Within 'said housing and adapted for a Yrolling movement to either side of central position; pivotal projections carried by and bodily n'iovablevvith said element; counterwveights eccentri'cally and pivotally carried on said projections;V and guide ledges provided on the Wallsfof said housing opposite the ends of said element, said guide ledges cooperable with said counterweights and having openings at their centers ofa size substantiallyequal to the size of said countervveights, so that said count`erweights normally lie in said openings and are tiltably elevated onto said ledges when said element is moved toy either side ol central position.

3. In a side bearing for railway cars, the combination with av housing adapted to be secured to the underside of aV body bolster, said housing having depending side Walls with horizontal ledges on the inner faces thereof, the linner faces of said side Walls being also provided with guide recesses each having an elongated horizontally extending upper portion and acentral vertically eX- tending lower portion;A of kan anti-friction roller disposed Within said housing and having an axially disposed pinV therethru With the ends of said pin supported on said hori-v zontal ledges;v and Vcounteriveight disks eccentrically and pivotally mount-ed on the ends of said pin, said disks Working Within said guide recesses and so arranged that they .have hereunto subscribed my naine this 30th are normally in said vertically extendingr day of June,-1923. port-ions of said recesses and are elevated to u position of unstable equilibrium when the JOHN F. CONNOR. 5 roller is moved to either side of central posi- Witnesses:

tion. FRANCES SAVAGE,

In Witness that I claim the foregoing I HARRIETTE M. BEAMER. 

